/* =========================================================
   ShibaPapa Studio — stylesheet
   ライト／ダーク両対応。色はすべて下の変数で一括変更できます。
   ========================================================= */

:root {
  /* 柴犬カラー（お好みで変えてください） */
  --accent:        #c8763a;
  --accent-hover:  #a95f2b;
  --accent-soft:   #f6ede4;

  --bg:            #fdfbf9;
  --bg-alt:        #f5f1ec;
  --surface:       #ffffff;
  --text:          #23201d;
  --text-muted:    #6d6560;
  --border:        #e5ded6;

  --radius:        14px;
  --wrap:          1080px;

  --font-sans: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP",
               "Yu Gothic UI", "Meiryo", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent:        #e8a165;
    --accent-hover:  #f0b783;
    --accent-soft:   #2e241c;

    --bg:            #16130f;
    --bg-alt:        #1d1915;
    --surface:       #221d18;
    --text:          #f0eae4;
    --text-muted:    #a89e96;
    --border:        #352e27;
  }
}

/* ---------- base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

h1, h2, h3 { line-height: 1.35; letter-spacing: .01em; }

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

/* 画面外に飛ばすと横スクロールが出るので clip-path で隠す */
.skip-link {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link:focus {
  position: fixed;
  left: 1rem; top: 1rem;
  width: auto; height: auto;
  margin: 0;
  clip-path: none;
  z-index: 100;
  background: var(--surface);
  color: var(--text);
  padding: .6rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: .02em;
}
.brand-mark { font-size: 1.25rem; }

.nav {
  display: flex;
  gap: 1.5rem;
  font-size: .92rem;
}
.nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding-block: .3rem;
}
.nav a:hover { color: var(--accent); }

/* 狭い画面ではロゴとナビが競合するので詰める */
@media (max-width: 560px) {
  .brand { font-size: .95rem; }
  .brand-mark { font-size: 1.1rem; }
  .nav { gap: 1rem; font-size: .85rem; }
}
@media (max-width: 360px) {
  .brand-text { display: none; }
}

/* ---------- hero ---------- */

.hero {
  padding-block: clamp(4rem, 12vw, 8rem);
  background:
    radial-gradient(60% 90% at 15% 0%, var(--accent-soft), transparent 70%);
}

.hero-inner { max-width: 42rem; }

.eyebrow {
  margin: 0 0 1rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-title {
  margin: 0 0 1.4rem;
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -.01em;
}

.hero-lead {
  margin: 0 0 2.2rem;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .8rem 1.6rem;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; }

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: var(--surface);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- sections ---------- */

.section { padding-block: clamp(3.5rem, 9vw, 6rem); }
.section-alt { background: var(--bg-alt); }

.section-label {
  margin: 0 0 .5rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-title {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
}

.section-lead {
  margin: 0 0 2.5rem;
  max-width: 40rem;
  color: var(--text-muted);
}

/* ---------- about ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.about-body p { margin: 0 0 1.2rem; max-width: 38rem; }
.about-body p:last-child { margin-bottom: 0; }

.facts {
  margin: 0;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.fact + .fact {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

.fact dt {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.fact dd {
  margin: .2rem 0 0;
  font-weight: 600;
}

@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ---------- works cards ---------- */

.cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.card-thumb {
  aspect-ratio: 16 / 10;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent-soft), var(--bg-alt));
  color: var(--accent);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: .05em;
}

.card-body { padding: 1.25rem 1.4rem 1.5rem; }

.card-title { margin: 0 0 .5rem; font-size: 1.1rem; }
.card-text  { margin: 0 0 .8rem; color: var(--text-muted); font-size: .95rem; }
.card-meta  { margin: 0; font-size: .82rem; color: var(--text-muted); letter-spacing: .04em; }

/* ---------- contact ---------- */

.contact-mail {
  margin: 0 0 2rem;
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  font-weight: 700;
  word-break: break-all;
}

.links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}
.links a {
  display: inline-block;
  padding: .5rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: .9rem;
  text-decoration: none;
  color: var(--text);
}
.links a:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.copyright {
  margin: 0;
  font-size: .85rem;
  color: var(--text-muted);
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}